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Kelly Clarkson brushed off her recent recording studio mishap [2] to celebrate her son Remington's first birthday this week. The "Piece by Piece" singer, who welcomed her little boy with husband Brandon Blackstock in April 2016, shared a few photos from the adorable celebration on Instagram on Wednesday. "Happy 1st Birthday to our sweet little boy!! #RemyB #BlackstockCampgrounds #ILoveHim," she captioned the snaps of Remington enjoying his cake and playing on a rocking horse. While the couple's 2-year-old daughter, River [3], wasn't in the photos, we have a feeling she was right there for the party. Kelly and Brandon, who celebrated their third wedding anniversary [4] in October, are also parents to Brandon's two children from a previous relationship, Seth and Savannah.